Hubbell V10 Betriebsanleitung

OPERATING AND MAINTENANCE MANUAL FOR

ELECTRIC INDUSTRIAL PROCESS

WATER HEATER

ELECTRIC HEATER COMPANY

BASE MODEL “ V10 and V20 ”

HUBBELL

ELECTRIC HEATER COMPANY

P.O. BOX 288

STRATFORD, CT 06615

PHONE: (203) 378-2659

FAX: (203) 378-3593

INTERNET: http://www.hubbellheaters.com/

-- IMPORTANT --

Always reference the full model number and serial number when calling the factory.

WARNING / CAUTION

1. Tank is to be completely filled with water and all air is to be vented before energizing.

2. Due to the rigors of transportation, all connections should be checked for tightness before heater

is placed in operation.

3. Safety relief valve must be installed in tapping provided.

4. The refractory material used in heating elements may absorb some moisture during transit,

periods of storage, or when subjected to a humid environment. This moisture absorption results

in a cold insulation resistance of less than twenty(20) megohms. If this heater has been

subjected to the above condition, each heating element must be checked for insulation

resistance before energizing. A low megohm condition can be corrected by removing the

terminal hardware and baking the element in an oven at 350°F -700°F for several hours or until

the proper megohm reading is obtained.

5. KEEP AWAY FROM LIVE ELECTRICAL CIRCUITS.

Do not perform any maintenance, make any adjustments, or replace any components inside the

control panel with the high voltage power supply turned on. Under certain circumstances,

dangerous potentials may exist even when the power supply is off. To avoid casualties, always

turn the power supply safety switch to off, turn the charge or ground the circuit before

performing any maintenance or adjustment procedure.

6. The unit is designed to operate at pressure not more than 150 psi.

7. Generalized instructions and procedures cannot anticipate all situations. For this reason, only

qualified installers should perform the installations. A qualified installer is a person who has

licensed training and a working knowledge of the applicable codes regulation, tools, equipment,

and methods necessary for safe installation of an electric resistance water heater. If questions

regarding installation arise, check your local plumbing and electrical inspectors for proper

procedures and codes. If you cannot obtain the required information, contact the company.

TABLE OF CONTENTS

SECTION TITLE PAGE #

I GENERAL DESCRIPTION AND CONSTRUCTION 5

II INSTALLATION 10

III SCHEDULED MAINTENANCE AND OPERATION 16

IV TROUBLESHOOTING 18

V SERVICING&REPLACEMENTOFPARTS 20

VI MISCELLANEOUS CHARTS AND FORMULAS 26

SECTION I - GENERAL DESCRIPTION AND CONSTRUCTION

GENERAL DESCRIPTION

This booklet describes an electric water heater designed for use in an industrial or commercial

application. The complete assembly consists of the storage tank, immersion electric heating element(s),

thermostat, safety relief valve, safety high temperature cut out, magnetic contactor(s), and any other

required electrical operating control. Optional equipment may be supplied with your unit. Please

consult the product drawing for details specific to your assembly. The unit is factory assembled,

insulated, jacketed, wired, tested, and ready for electrical and plumbing service connections.

CONSTRUCTION

TANK

The storage tank is constructed of type 316L stainless steel for maximum tank longevity. The tank is

formed by all welded construction and is designed for a maximum allowable working pressure of 150

psi (300 psi TP).

TANK CONNECTIONS

The heater is supplied with separate connections for the cold water inlet and the hot water outlet. Water

entering the cold water inlet is deflected by means of a baffle within the tank. A ¾-inch FNPT

connection is provided for mounting a combination safety temperature and pressure relief valve. An

overflow line should be utilized from the relief valve outlet to a floor drain. See drawing for locations

and sizes.

HEATING ELEMENT

The water heater is supplied with an electric immersion heating element assembly(s), composed of

incoloy or copper sheathed elements that are brazed into a brass flange. Each assembly is fastened to a

corresponding tank flange using a gasket and four (4) 3/8-16 x 1-inch long hex head steel bolts and

nuts. See drawing for voltage and power ratings.

CONTROL THERMOSTAT

The water heater is supplied with a single stage immersion thermostatic

switch that is installed and wired at the factory. The thermostat can be

adjusted through a range of 100° - 195° F, (an optional low range, 30° -

110° F, is available), and is adjustable with a flat tip screwdriver. Other

thermostatic controls are available, see Options below.

TEMPERATURE HIGH LIMIT SWITCH

As a safety device, either a surface mounted high temperature cut-off switch with manual reset, factory

set at 205° F, or an optional immersion high temperature cut-off switch with manual reset, adjustable

through a range of 100° - 240° F, is provided. In the event of an over-temperature condition, the

thermostat will disengage the power from the system. The high limit must be manually reset thereafter

to restart the heater.

ManualReset

Surface Mounted High

TemperatureCut-OffSwitch ImmersionHighTemperatureCut-OffSwitch

MAGNETIC CONTACTOR

The magnetic contactor(s) is a heavy-duty resistive load type

rated for 100,000 cycles. The contactor supplies power to the

heating element(s) based on the resistive load (non-inductive) of

the heater only when the thermostatic switch is engaged, thereby

pulling in the contacts until the desired temperature is reached.

At this point, the contacts will drop out, which in turn

disconnects power from the elements.

OUTER SHELL, INSULATION, AND SUPPORTS

The tank is encapsulated in 2-inches of high-density fiberglass insulation. The protective shell is

constructed of galvaneel and is coated with a durable silver hammertone finish. Heavy gauge steel

support legs are provided.

OPTIONS

The following optional features may be included in your water heater. Reference included drawing

specific to your heater for further details.

Low Water Cut-Off

Used as a safety device, the electronic low water cut-off is

used to detect a low water situation and disengage the

operating coils in the magnetic contactor(s). Once the

condition is remedied, the low water cut-off switch is

automatically reset.

Fused Low Voltage Transformer

A fused low voltage transformer may be supplied. This option

is standard only in 480-volt systems with low water cut-offs to

step down the voltage to 240-volt for safety when working with

control circuits. As an option, a transformer may be installed on

any unit to step down the voltage to 120-volts.

Stainless Steel Outer Jacket

An optional stainless steel outer jacket may replace the standard galvaneel jacket.

Watertight Jacket

The Jacket may be constructed in a watertight manner for wet/humid locations.

Dial Temperature and Pressure Gauge

A combination temperature (70° - 250° F) and pressure (0 –

200 psi) gauge with 2½-inch dial may be supplied for in-

line installation (shipped loose).

Vacuum Relief Valve

A vacuum relief valve may be provided with the unit to reduce the risk of back siphonage and back

pressure of the system. The valve will be shipped loose for in-line installation. Instructions for

installation are provided with the valve.

Individually Fused Elements

To prevent the possibility of damage to control circuits and other elements in case of electrical

overloads, fuses may be supplied for each element. Two types of fuses may be used; a type NON for

voltages less than 250-volt or type JJS for voltage less than 600-volt.

Type JJS Type NON

Built-in Circuit Breaker

A built-in circuit breaker may be provided with or without shunt trip protection for protection from

circuit overload.

NEMA 4X Electric Control Panel

A NEMA 4X control panel may be supplied to provide watertight construction for installation in “wet”

areas.

Building Management System (BMS)

A Building Management System control package may be supplied for remote operation and alarm

capabilities.

Pump Interlock Terminal Block

An optional pump interlock terminal block may be installed to prevent energizing when the pump is not

running.

Silicon Control Rectifier

A silicon control rectifier (SCR) “zero fired” power controller for 0-100% proportional control of

heaters may be supplied.

Digital Display

A 1/16 DIN electronic temperature control package may

be installed. A separate manufacturer’s operating

manual will be supplied with the unit.

Optional Connections

Flanged inlet and outlet connections (150#)

Threaded inlet and outlet connections (1 ½”, 2” MNPT)

Sanitary Connections

Suspension Straps

For under counter, off the floor operation an optional suspension strap may be supplied in place of the

standard support legs.

Special Customized Features

Please reference drawing for details.

SECTION II – INSTALLATION

WARNING / CAUTION

DO NOT TURN ON THE ELECTRIC POWER SUPPLY to this equipment until heater is

completely filled with water and all air has been released. If the heater is NOT filled with water when

the power is turned on, the heating elements will burn out.

For protection against excessive pressures and temperatures, local codes require the installation of a

temperature-and-pressure (T&P) relief valve certified by a nationally recognized laboratory that

maintains periodic inspection of production of listed equipment of materials, as meeting the

requirements for Relief Valves and Automatic Gas Shutoff for Hot Water Supply Systems. ANSI

Z21.22-1971. THE CUSTOMER IS RESPONSIBLE TO PROTECT PROPERTY AND

PERSONNEL FROM HARM WHEN THE VALVE FUNCTIONS.

All water heaters have a risk of leakage at some unpredictable time. IT IS THE CUSTOMER'S

RESPONSIBILITY TO PROVIDE A CATCH PAN OR OTHER ADEQUATE MEANS, SO THAT

THE RESULTANT FLOW OF WATER WILL NOT DAMAGE FURNISHINGS OR PROPERTY.

WATER HEATER PLACEMENT

1. Place the heater on a solid foundation in a clean, dry location nearest to the point of hot water

use.

2. The water heater should be protected from freezing and waterlines insulated to reduce energy

and water waste.

3. Leave a minimum of 18” clearance for element withdrawal, if necessary.

4. Do not install in an area where flammable liquids or combustible vapors are present.

PIPING INSTALLATION

NOTE: The most effective means for preventing deterioration from accelerated corrosion due to

galvanic and stray current is the installation of dielectric fittings/unions. The installation of these

fittings is the responsibility of the installing contractor.

1. Connect the cold water inlet and hot water outlet to the appropriate connections as shown;

refer to the drawing for location and sizes.

2. Install in-line pressure and temperature gauge, if supplied.

3. Install in-line vacuum breaker, if supplied.

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